chem lab exp. 5(ii)

chem lab exp. 5(ii) - P u rpose: Determine the rate law for...

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Unformatted text preview: P u rpose: Determine the rate law for the reaction of oxalic acid with potassium permanganate using a colorimetric analysis. P rocedure: L ab procedure is referred to the lab manual for Experiment #5 – Kinetics I Data: Table 1 : Data for Experiment #1 Conditions T=24.2℃ [H 2C2O4] Time (s) Rate1=[KMnO 4]/ti me T rial 1 T rial 2 T rial 3 T rial 4 T rial 5 0.0108 0.0108 0.0108 0.0108 0.0108 0.3146 0.3146 0.3146 0.3146 0.3146 327 308 311 318 307 3.303 X 10-5 3.506 X 10-5 3.473 X 10-5 3.396 X 10-5 3.518 X 10-5 Average Rate Standard Deviation 95% confidence, λ 3.497 X 10-5 8.765 X 10-6 ±1.088 X 10-5 Table 2 : Data for Experiment #2 Conditions T = 24.0℃ [H 2C2O4] Time (s) Rate2=[KMnO 4]/ti me T rial 1 T rial 2 T rial 3 T rial 4 T rial 5 0.0108 0.0108 0.0108 0.0108 0.0108 0.6292 0.6292 0.6292 0.6292 0.6292 147 140 141 140 146 7.347 X 10-5 7.714 X 10-5 7.660 X 10-5 7.714 X 10-5 7.397 X 10-5 Average Rate Standard Deviation 95% confidence, λ 7.566 X 10 -5 3.229 X 10 -12 ±4.001 X 10 -12 Table 3 : Data for Experiment #3 Conditions T = 24.2℃ [KMnO 4] [H 2C2O4] Time (s) Rate3=[KMnO 4]/ti me T rial 1 T rial 2 T rial 3 T rial 4 T rial 5 0.0217 0.0217 0.0217 0.0217 0.0217 0.3146 0.3146 0.3146 0.3146 0.3146 220 223 218 219 219 9.864 X 10 9.731 X 10 -5 -5 9.954 X 10 9.909 X 10 9.909 X 10 -5 -5 -5 Average Rate Standard Deviation 95% confidence, λ 9.463 X 10 2.179 X 10 -5 -11 ±2.705 X 10 -11 Conclusion: ...
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This note was uploaded on 03/18/2010 for the course COS 101121501 taught by Professor Langner during the Fall '08 term at RIT.

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chem lab exp. 5(ii) - P u rpose: Determine the rate law for...

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